Fastening device



May 22, 1934. C, Q BEAL "L, 1,960,046

FASTENING DEVICE Filed April .30. 1931 IN VEN TOR Y Wfl/5M A TTORNE Y soquences. ed to be placed 1n these openings as shown in 40 to the jarringor vibration of the parts, this being been placed in position 1n theopenings 12 and 50 rethreading or replacing the b Patented May 22, 1934j Y.

NED STATES PATENT @FCE l1,960,04l6 rAsTENiNG DEVICE charles o. Beal,YPort Arthur, Tex.,- as'signor to The rl'exas Company, New York, N. Y.,a cor-A poration of Delaware Application April 30, 1931', Serial No.533,917 3 Claims. (Cl. S52J My invention relates to fastening devicesfor in the other member such as the cylinder liner, holding one membersecurely in position against and a tapered member adapted to kbe pushedanother member, and more particularly to an into the expanding bushingto expand and force expanding bushing device for securing a member thelatter into tight engagement with the two such as a cylinder linerof apump or a comconnected members. Means are also provided for 60 pressernrmly against a cylinder head. The prinremoving the tapered member andfer sealing the cipal object of my invention is the provision of Openingin the cylinder head when the tapered a device of this kind which may beinstalled rlflernber is in its normal position. easily, which will notWork loose due to Vibration, For a better understanding of my invention,1^ and which will be strong enough for heavy duty reference may be hadto the accompanying drawwhlle requiring a, minimum 0f space. ing whereinFigure 1 is a sectional elevation t is frequently necessary thattwomembers, threugh a Cylinder heed and e Cylinder liner such as acylinder head and a cylinder liner SlflOWing the expanding bushing inDlaCe; Figure Should be maintained iirmly in position with 2 is asectional view taken on line 2 2 of Figure 1 5 respect to each other andthis is especially true 1, while Figure 3 iS an end View andlongitudinal 70 in gas compressors where, due to the presence SeCtiOn0I" the bushing member. i y of corrosive substances such as hydrogensulphide Referring to Figure 1 0f the drawing I have in the gases, it isnecessary to use a liner for the illustrated my invention eS applied t0e Cernmain cylinder, this liner being made of a material MESSO? having dCylinder' head l0 and a liner VSID Which will not be acted upon by thegases. The 11, the Outel" 01 mein Cylindei being Omitted for 75 cylinderliner usually has a friction nt in the the Sake 0f ClenlneSS- TheCylinder head l0 iS main cylinder and since the inlet and exhaustPYOViOled With 2in Opening 12 eXtending thereports must pass throughboth the cylinder and tllIOu-gll, One end 0f this Opening being threadedthe liner, it is essential that the liner be maiiies She-Wn et 13- TheCylinder liner 11 is provided 2,5 tained in perfect alignment with thecylinder. With one Ol more apertures 14, each aperture 14C S0 It isobvious that if the liner should turn with being arranged SO 21S tObe inalignment With One respect to the main Cylinder, due, peyhaps to of theopenings 12 when the cylinder liner is in vibration, the ports would notalign and an eXplonormal Operatl@ Position With YeSDeCt t0 the Sion ofgases might result with serious Conse cylinder head 10. Abushing 15 oi"slightly smaller diameter than the openings 12 and 14 is adapt- 85 Myinvention is not limited to use only with cylinder liners since 'thereare many other instances where it is desirable or necessary to hold twoobjects in a definite or predetermined posi- 353 tion. In such instancesit is common to pass threaded bolts or screws through one of the objectsand screw them into the other object. There are several disadvantages inthis practice, one of these being the loosening of the bolts due Figure1, substantially halt of the bushing being in the cylinder head 10 andhalf being in the liner 11. The bushing 15 is provided With alongitudinal tapered hole 16 and is split along 90 one side as shown at17. I t will thus be seen thatv i the bushing 15 is capable of beingexpanded and when in its expanded position will hold the liner 11 rmwith respect to the cylinder head 10. In order to expand the bushing 15after it has 95 particularly true in connection with reciprocat- I Y ingpumps and compressors. When connections 134,1 have provlded a' pm l?hfwmg a' tapered pm" are made with the use of ordinary bolts, these non181m adaptfd to t Wlthm the tapered hole bolts often work loose or breakdue to unequal 16 of me bushmg 15' A set screw ,19 Coopemts 45 expansionwhen heated, thus permitting the va- W1th-the threaded end of the Openmg12 and 1S 100 nous parts to get out of alignment whereupon provided withan aperture 20 in which a suitable y serious damage may result.Moreover, the tool such as a small socket wrench may be inserted to turnthe screw. A blind nut 21 having a gasket threads on the bolts arecontinually becoming worn or broken, thus entailing an expense for (nOtSliOWn) may be threaded 0n the DiOleCting olts or the parts end of theset screw 19 to seal the opening 12. 105

which the bolts serve to connect. When the bushing 15, pin 18 and setscrew 19 K 1n carrying out my invention I have provided a are inposition as shown in Figure 1 the set screw fastening device comprisinga semi-iexible ex- 19 unen being turned will contact with the 19inpanding bushing adapted to be placed partly in 18 and force the taperedportion 180!l of the pin 5 5 one member such as the cylinder head andpartly inte the Split bushing l5, tliuS eXDending the 110 bushing intofirm engagement with the cylinder head 10 and the liner 11. The blindnut 21 may then be screwed on the projecting end of the set screw 19 andall of the parts will remain in the holding position.

If it should be desired to remove the bushing 15 it is merely necessarytc remove the nut 21, unscrew the set screw 19 and then by screwing asmall bolt or other tool into an opening 22 in the end of the pin 18 thepin can be readily withdrawn from the bushing 15 and the bushing theneasily removed from the openings 12 and 14.

Obviously many modifications and variations of the invention, ashereinbefore set forth, may be made without departing from the spiritand scope thereof, and therefore only such limitations should be imposedas are indicated in the appended claims.

I claim:

1. In a device for fastening two members together, said members beingprovided with aligned apertures, a cylindrical bushing having alongitudinally tapered hole and adapted to be inserted partly in each ofsaid apertures, and means for expanding said bushing in said aperturescomprising a pin having a tapered portion adapted to t Within thetapered hole in said bushing, and an element adapted to be threaded intothe aperture in one of said members for forcing said pin into saidbushing.

2. A device for maintaining a cylinder liner in position against acylinder head, said liner and said head being provided with alignedopenings, comprising a split bushing adapted to be inserted in saidopenings, a pin having a tapered portion adapted to be forced into saidbushing to expand said bushing in said openings whereby said liner willbe held in rigid engagement with said cylinder head, said pin beingnormally enclosed in the opening in said cylinder head, and meansprovided for engagement of a tool for withdrawing said pin from saidbushing.

3. A device for maintaining a cylinder liner in position against a.cylinder head, said liner and said head being provided with alignedopenings, comprising a hollow split bushing adapted to be inserted insaid openings, a pin having a tapered portion for engagement with saidbushing, said pin being located within the opening in said cylinderhead, and a set screw threaded in said last mentioned opening andadapted to cooperate with said pin for forcing said pin into saidbushing to expand said bushing into rm engagement with said members.

C. C. BEAL.

